Featuring a translucent blue lacquered guilloché dial, the new HM Double Hemisphere Perpetual Moon from Arnold & Son’s Royal Collection incorporates two mega moon-phase indications. For the first time, the HM Double Hemisphere Perpetual Moon displays the moon phases as they can be seen both from the northern and southern hemispheres respectively, all in a single watch.
A perfect example of Arnold & Son’s technical and artistic excellence, the HM Double Hemisphere Perpetual Moon displays the poetic complication indicating the different phases of moon with rich guilloché dials and two three-dimensional big moons.
Additionally, these large moons are one of the most visually stunning recreations of the moon because they are three-dimensional sculptured moons that were first hand engraved and then duplicated for the series. The two sculptured moons are then inserted into the disc.
From the technical side, in addition to the HM Double Hemisphere Perpetual Moon being so precise, it is also an intriguing complication in that it is not simply a module added to the movement, but, in fact, is fully integrated into the calibre. The watch also has a unique easy-to-set feature thanks to the ingenious addition of a third moon phase indication installed at the back of the movement. This third moon display, visible via a transparent case back, features a graduated dial and a pointer hand that allows for a more exact setting.
Model: HM Double Hemisphere Perpetual Moon
Reference: 1GLAR.U03A.C122A, 18-karat red gold case, blue guilloché dial
Manufacture Arnold & Son calibre, hand-wound, big perpetual moons, 27 jewels, diameter 34 mm, thickness
5.35 mm, power reserve 90 h, two barrels, 21'600 vibrations/h
Movement decoration: nickel-silver movement, rhodium treated with Haute Horlogerie finishing: manually chamfered bridges with polished edges, fine circular graining and Côtes de Genève rayonnantes, blued screws
Translucent blue lacquered guilloché, translucent blue lacquered guilloché moon disc with golden moon and stars; back dial: fine circular graining, rhodium treated, rendition of the 8 phases of the moon
Hours, minutes, two big perpetual moon phase indications on the front, diameter disc: 29 mm, diameter moons: 11.20 mm, third moon phase indication on the back for setting purposes
18-karat red gold, diameter 42 mm, cambered sapphire with antireflective coating on both sides, case back see-through sapphire, water-resistant to 30 m
Hand-stitched black or brown alligator leather
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